Investigate factors and multiples:
a) Find all factor pairs for a whole number in the range 1–100.
b) Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1–100 is a multiple of a given one-digit number.
c) Determine whether a given whole number in the range 1–100 is prime or composite.
Understand factor pairs as two whole numbers that multiply together to get one product.
Understand multiples as a product of two given whole numbers.
List the multiples of 2 through 9 up to 100.
Create a list or chart of factor pairs of whole numbers 1-100.
Identify, from a list or chart, which whole numbers are prime or composite.
Use tools such as number lines, hundreds charts, arrays, or cubes to model relationships between factors and multiples.
Understand that prime numbers have exactly one factor pair.
Understand that composite numbers have more than one factor pair.